JPS5518659A - Electrophotographic developing method - Google Patents
Electrophotographic developing methodInfo
- Publication number
- JPS5518659A JPS5518659A JP9210878A JP9210878A JPS5518659A JP S5518659 A JPS5518659 A JP S5518659A JP 9210878 A JP9210878 A JP 9210878A JP 9210878 A JP9210878 A JP 9210878A JP S5518659 A JPS5518659 A JP S5518659A
- Authority
- JP
- Japan
- Prior art keywords
- sleeve
- toner
- gap
- developing
- alternating field
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Dry Development In Electrophotography (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
- Developing For Electrophotography (AREA)
Abstract
PURPOSE: To enhance thee reproducibility of picture image end part and improve the gradient, by developing while turning an electrostatic image holder and a sleeve to carry the toner in the same direction and at a roughly same speed, with a gap being maintained between the two, and applying alternating field less than 1kHz in frequency.
CONSTITUTION: A photosensitive drum 11, and a nonmagnetic sleeve 12 enveloping a magnet inside are opposedly provided, keeping a gap larger than the thickness of the toner layer which carries the sleeve 12, and a bias in the phase of a specific polarity is applied. In the developing gap, the toner is caused to reach the picture image part and non-picutre image part of the sensitive drum 11 from the sleeve, and an alternating field in the phase of reverse polarity is applied to return the toner reaching the non-picture image part to the sleeve 12 side. In such developing unit, the both members 11 and 12 are rotated in the same direction at an equal speed, and an alternating field of which frequency is less than 1kHz is applied to the developing gap. In this process, the development is carried out at the same time.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53092108A JPS5832377B2 (en) | 1978-07-28 | 1978-07-28 | developing device |
US06/058,435 US4292387A (en) | 1978-07-28 | 1979-07-18 | Magnetic developing method under A.C. electrical bias and apparatus therefor |
CA000332064A CA1142804A (en) | 1978-07-28 | 1979-07-18 | Developing method for developer transfer under electrical bias and apparatus therefor |
AU49115/79A AU530517B2 (en) | 1978-07-28 | 1979-07-20 | Developing with an electrical bias |
GB7925724A GB2030478B (en) | 1978-07-28 | 1979-07-24 | Developing method for developer transfer under electrical bias |
FR7919483A FR2433781B1 (en) | 1978-07-28 | 1979-07-27 | DEVELOPMENT METHOD WITH TRANSFER OF DEVELOPING AGENT BY ELECTRIC POLARIZATION FIELD AND APPARATUS FOR CARRYING OUT SAID METHOD |
DE2954572A DE2954572C2 (en) | 1978-07-28 | 1979-07-27 | |
DE19792930595 DE2930595A1 (en) | 1978-07-28 | 1979-07-27 | METHOD FOR DEVELOPING A LATENT IMAGE AND DEVICE THEREFOR |
US06/426,979 US4473627A (en) | 1978-07-28 | 1982-09-29 | Developing method for developer transfer under electrical bias and apparatus therefor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP53092108A JPS5832377B2 (en) | 1978-07-28 | 1978-07-28 | developing device |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP57127026A Division JPS5837657A (en) | 1982-07-21 | 1982-07-21 | Developing method and its apparatus |
JP14337189A Division JPH02191973A (en) | 1989-06-06 | 1989-06-06 | Developing device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5518659A true JPS5518659A (en) | 1980-02-08 |
JPS5832377B2 JPS5832377B2 (en) | 1983-07-12 |
Family
ID=14045228
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP53092108A Expired JPS5832377B2 (en) | 1978-07-28 | 1978-07-28 | developing device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5832377B2 (en) |
Cited By (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56154769A (en) * | 1980-05-02 | 1981-11-30 | Canon Inc | Developing device |
JPS58186768A (en) * | 1982-04-24 | 1983-10-31 | Canon Inc | Developing device |
JPS59181362A (en) * | 1983-03-31 | 1984-10-15 | Konishiroku Photo Ind Co Ltd | Developing method |
JPS59222852A (en) * | 1983-06-02 | 1984-12-14 | Konishiroku Photo Ind Co Ltd | Developing method |
JPS6014263A (en) * | 1983-07-06 | 1985-01-24 | Canon Inc | Developing device |
JPS63149668A (en) * | 1986-12-15 | 1988-06-22 | Canon Inc | Contact electric charging method |
JPS63237078A (en) * | 1987-03-26 | 1988-10-03 | Toshiba Corp | Recorder |
US5157483A (en) * | 1987-06-22 | 1992-10-20 | Konica Corporation | Multicolor image forming method and apparatus |
US5175070A (en) * | 1989-09-27 | 1992-12-29 | Canon Kabushiki Kaisha | Image forming method and image forming apparatus |
US5202731A (en) * | 1989-09-27 | 1993-04-13 | Canon Kabushiki Kaisha | Image forming apparatus having an alternating bias electric field |
US5219695A (en) * | 1989-11-22 | 1993-06-15 | Canon Kabushiki Kaisha | Image forming method |
US5310615A (en) * | 1989-12-12 | 1994-05-10 | Canon Kabushiki Kaisha | Image forming method |
US5338894A (en) * | 1990-09-21 | 1994-08-16 | Canon Kabushiki Kaisha | Image forming method with improved development |
US5348829A (en) * | 1991-11-08 | 1994-09-20 | Canon Kabushiki Kaisha | Monocomponent-type developer for developing electrostatic image and image forming method |
US5610690A (en) * | 1993-08-30 | 1997-03-11 | Canon Kabushiki Kaisha | Electrophotographic apparatus and process cartridge featuring an electrophotographic photosensitive member having a surface layer of lubricative fluorine-containing resin powder |
USRE35581E (en) * | 1986-12-15 | 1997-08-12 | Canon Kabushiki Kaisha | Charging device |
US8374530B2 (en) | 2005-07-25 | 2013-02-12 | Afit Corporation | Methods and apparatus for developing an electrostatic latent image using conductive particles |
JP2020112719A (en) * | 2019-01-15 | 2020-07-27 | 富士ゼロックス株式会社 | Image forming apparatus |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS61158784U (en) * | 1985-03-25 | 1986-10-01 | ||
JP2004219640A (en) | 2003-01-14 | 2004-08-05 | Seiko Epson Corp | Image forming method |
-
1978
- 1978-07-28 JP JP53092108A patent/JPS5832377B2/en not_active Expired
Cited By (23)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS56154769A (en) * | 1980-05-02 | 1981-11-30 | Canon Inc | Developing device |
JPS58186768A (en) * | 1982-04-24 | 1983-10-31 | Canon Inc | Developing device |
JPH0454954B2 (en) * | 1982-04-24 | 1992-09-01 | Canon Kk | |
JPS59181362A (en) * | 1983-03-31 | 1984-10-15 | Konishiroku Photo Ind Co Ltd | Developing method |
JPS59222852A (en) * | 1983-06-02 | 1984-12-14 | Konishiroku Photo Ind Co Ltd | Developing method |
JPH0527860B2 (en) * | 1983-07-06 | 1993-04-22 | Canon Kk | |
JPS6014263A (en) * | 1983-07-06 | 1985-01-24 | Canon Inc | Developing device |
JPS63149668A (en) * | 1986-12-15 | 1988-06-22 | Canon Inc | Contact electric charging method |
JPH0352058B2 (en) * | 1986-12-15 | 1991-08-08 | Canon Kk | |
USRE35581E (en) * | 1986-12-15 | 1997-08-12 | Canon Kabushiki Kaisha | Charging device |
JPS63237078A (en) * | 1987-03-26 | 1988-10-03 | Toshiba Corp | Recorder |
US5157483A (en) * | 1987-06-22 | 1992-10-20 | Konica Corporation | Multicolor image forming method and apparatus |
US5175070A (en) * | 1989-09-27 | 1992-12-29 | Canon Kabushiki Kaisha | Image forming method and image forming apparatus |
US5202731A (en) * | 1989-09-27 | 1993-04-13 | Canon Kabushiki Kaisha | Image forming apparatus having an alternating bias electric field |
US5219695A (en) * | 1989-11-22 | 1993-06-15 | Canon Kabushiki Kaisha | Image forming method |
US5298950A (en) * | 1989-11-22 | 1994-03-29 | Canon Kabushiki Kaisha | Image forming apparatus |
US5310615A (en) * | 1989-12-12 | 1994-05-10 | Canon Kabushiki Kaisha | Image forming method |
US5338894A (en) * | 1990-09-21 | 1994-08-16 | Canon Kabushiki Kaisha | Image forming method with improved development |
US5504272A (en) * | 1990-09-21 | 1996-04-02 | Canon Kabushiki Kaisha | Magnetic toner having defined particle distribution |
US5348829A (en) * | 1991-11-08 | 1994-09-20 | Canon Kabushiki Kaisha | Monocomponent-type developer for developing electrostatic image and image forming method |
US5610690A (en) * | 1993-08-30 | 1997-03-11 | Canon Kabushiki Kaisha | Electrophotographic apparatus and process cartridge featuring an electrophotographic photosensitive member having a surface layer of lubricative fluorine-containing resin powder |
US8374530B2 (en) | 2005-07-25 | 2013-02-12 | Afit Corporation | Methods and apparatus for developing an electrostatic latent image using conductive particles |
JP2020112719A (en) * | 2019-01-15 | 2020-07-27 | 富士ゼロックス株式会社 | Image forming apparatus |
Also Published As
Publication number | Publication date |
---|---|
JPS5832377B2 (en) | 1983-07-12 |
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